Wear plate assembly



W. J. FENDNER WEAR PLATE ASSEMBLY Filed April 4, 1956 "'11:: Ill; III"ATTORNEYS.

Patented Mar. 23, 1937 i UNITED STATES PATENT OFFICE WEAR PLATE ASSEMBLYWillard J. Fendner, Pittsburgh, Pa., assignor to Frederic Schaefer,Pittsburgh, Pa.

Application April 4, 1936, Serial No. 12,755

6 Claims. (01. 188--209) This invention relates to wearing shoes forrebracket I projects laterally from the top chord 2 ceiving andsupporting brake hangers in railway of a railway truck frame. The freeend of the truck frame brackets. bracket extends downwardly and isprovided with Railway brake hangers are generally connected laterallyprojecting upper and lower parallel walls to truck frame bracketsthrough the medium of 3 extending longitudinally of the truck frame andplates or shoes mounted in the brackets for reforming a slot 4 open onthree sides. This slot ceiving the wear resulting from movement of theis for the purpose of receiving the upper yoke of hangers therein. Asthese shoes are intended to a brake hanger 5. To prevent the hanger frombe replaceable when worn, it is highly desirable wearing the bracket, awearing plate or shoe 6 10 that they be readily ins-ertable into, andremovis detachably mounted in the slot with its inner l0 able from, thecast truck frame brackets, the end provided with a concave hanger seatI. To

shoe-receiving slots of which vary somewhat in aid in centering the shoein the slot and topresize. To allow for this variation in size, wearingvent the side arms of the hanger from wearing shoes are made smallenough to enter the smallest the bracket, the shoe is preferablyprovided at bracket slots encountered. Accordingly, in many the ends ofseat I with down-turned flanges 8 cases the shoes fit loosely in thebracket slots that overlap the underlying portion of the brackwhere theyvibrate and rattle. This causes the ct. To decrease the weight of theshoe, save engaging surfaces of the brackets and shoes to metal, andmake it feasible to punch fastenerwear rapidly, thereby permittinggreater relative receiving holes 9 and I0 therethrough, its outermovements and consequently greater wear. portion is originally maderelatively long and 20 It is among the objects of this invention toprothin and is then punched and bent upwardly and vide a wearing shoewhich can be easily inserted backwardly to form a U-shape portion havinginto and removed from bracket slots of different upper and lower legsfor substantially engaging sizes, and which is tightly held in Place inSuch both walls 3 of the bracket. This outer portion brackets so as tosubstantially eliminate vibration of the shoe is preferably strengthenedby bosses and wear between their opposed surfaces. int al therewith,

Accordin t th s invention a w a sh h To lock the shoe in bracket slot 4,the upper inner por f which is provided w a b a and lower walls of thebracket are provided with ha e Seat, is mounted in the usual manner inopenings l2 and I3 in axial alignment with shoe a slot in a b etProjecting e a y from a openings 9 and Ill. A suitable retaining member30 railway ru k frame Resilient means, p ris detachably disposed inthese four openings, and

y in the form of a 0011 p is associated if a bolt I4 is used the nut I5is preferably locked with the bracket and shoe for holding the latter inplace as by means of a metal strip I6 through tightly against thebracket to prevent wear of one end of which the bolt extends and theother Q the engaging surfaces of the shoe and bracket end of which isturned upwardly against the end due to vibration between them. Thebracket and of the lower wall of the bracket. After the nut shoe areprovided with the usual openings in has been tightened, the adjacent endof the lockwhich a fastening member, such as a bolt or ing strip is bentdownwardly as shown in Fig. 2 cotter pin, is disposed for detachablylocking the to prevent the nut from turning and working shoe in thebracket slot. Preferably, the spring loose. Bosses II add to thebolt-engaging sur- 0 is compressed between the shoe and the head offaces of the shoe to reduce its wear. the fastening membe It is afeature of this invention that the wear- Thc invent o s illustrated inthe p ying shoe is held in the bracket slot in such a maning drawing inwhich Fig. 1 is a transverse secnor as to substantially eliminatevibration be- 5 tiOn t rou the p chord of a i way truck tween them, andconsequent wear of their en- 5 frame, showing in elevation a brakehanger congaging surfaces. This is preferably accomplished nected to thehanger bracket by a wearing shoe by means of a resilient memberassociated with in accordance with this invention; Fig. 2 is an thebracket and the shoe for holding the shoe enlarged fragmentary viewtaken on the line firmly against the bracket at all times. As shown H-IIof Fig. 1; Fig. 3 is a plan view of the wearin Fig. 2, the resilientmember is preferably in 50 ing shoe taken on the line l1IIII of Fig. 2;and the form of a coil sprmg 2| encircling the upper Fig. 4 is avertical section through the shoe and portion of bolt 14. The upperbolt-receiving openhanger bracket taken on the line IV-IV of ings 9 andI2 of the bracket and shoe, respec- Fig.2. tively, are of materiallygreater diameter than Referring to Figs. 1 and 2 of the drawing, a thebolt so as to provide an annular space between the bolt and the walls ofthose openings for the reception of the coil spring. Consequently, thespring engages the upper surface of lower boss I l, extends upwardlythrough the upper portion of the shoe and the upper wall of the bracketand engages the bottom of the bolt head or a washer 22 at that point.

When nut I5 is tightened on the bolt the washer is drawn downwardlyuntil it engages the top of the .bracket. This compresses the coilspring between the washer and the lower portion of the shoe, and,consequently, the spring presses the wearing shoe firmly against thelower wall of the slot whereby vibration of the shoe in the bracket andthe wear attendant thereon is prevented.

When a wearing shoe is tightly and firmly held against vibration in ahanger bracket by a coil spring as disclosed herein, the life of boththe shoe and the bracket is materially lengthened. This is because thesubstantial elimination of relative movements between the shoe andbracket also substantially eliminates wear of their engaging surfaces.Furthermore, if a nut lock is not used, or if the lock is not properlyapplied, the load put on the nut by the compressed coil spring tends toprevent the nut from working loose from the bolt.

According to the provisions of the patent statutes, I have explained theprinciple and construction of my invention, and have illustrated anddescribed what I now consider to represent its best embodiment. However,I desire to have it understood that, within the scope of the appendedclaims, the invention may be practiced otherwise than as specificallyillustrated and described.

I claim:

1. The combination with a brake hanger bracket connected to a railwaytruck frame and having upper and lower walls forming a slot open onthree sides, of a wearing shoe mounted in said slot with its innerportion provided with a brake hanger seat, a coil spring associated withsaid bracket and constraining said shoe against said lower wall of thebracket, and means for retaining said shoe in said bracket.

2. The combination with a brake hanger bracket connected to a railwaytruck frame and having upper and lower walls forming a slot open onthree sides, of a wearing shoe mounted in said slot with its innerportion provided with a brake hanger seat, a coil spring disposed insaid slot and bearing against said shoe to constrain it against saidlower wall of the bracket, and means for retaining said shoe in saidbracket slot.

3. The combination with a brake hanger bracket connected to a railwaytruck frame and having upper and lower walls forming a slot open onthree sides, of a wearing shoe mounted in said slot with its innerportion provided with a brake hanger seat, a coil spring disposed insaid slot and bearing against said shoe for biasing it against saidlower wall of the bracket, said bracket walls and shoe being providedwith openings aligned with the axis of said coil spring, and a retainingmember extending through said openings and said spring for locking theshoe in the bracket slot.

4. The combination with a brake hanger bracket connected to a railwaytruck frame and having upper and lower walls forming a slot open onthree sides, of a wearing shoe mounted in said slot with its innerportion provided with a brake hanger seat, said bracket walls and shoebeing provided with aligned openings, a headed fastening member disposedin said openings for locking the shoe in the bracket slot, and resilientmeans compressed between said shoe and the head of said fasteningmember.

5. The combination with a brake hanger bracket connected to a railwaytruck frame and having upper and lower walls forming a slot open onthree sides, of a wearing shoe mounted in said slot with its innerportion provided with a brake hanger seat, said bracket walls and shoebeing provided with aligned openings, a headed fastening member disposedin said openings for locking the shoe in the bracket slot, the openingin said upper wall of the bracket being larger than said fasteningmember, and a coil spring encircling said fastening member in saidenlarged opening and being compressed between said shoe and the head ofthe fastening member.

6. The combination with a brake hanger bracket connected to a railwaytruck frame and having upper and lower walls forming a slot open onthree sides, of a wearing shoe mounted in said slot with its innerportion provided with a brake hanger seat, the outer portion of saidshoe being substantially U-shape with one leg engaging the lower wall ofthe slot and the other leg substantially engaging the upper wallthereof, said bracket walls and shoe legs being provided with alignedopenings, a bolt disposed in said openings, a nut on the lower end ofthe bolt, said openings in said upper wall of the bracket and upper legof the shoe being materially larger than said bolt, and a coil springencircling said bolt and compressed between said lower leg of the shoeand the head of the bolt.

WILLARD J. FENDNER.

